Finger driver and printer

Details Finger driver and printer Finger driver and printer

1991-11-15

1993-08-24

Moses, R. L.

Recorders

Electric recording

Electrochemical

346158, 358300, G01D 1506

Patent

active

052393186

ABSTRACT:
A driver for the finger electrodes in a charge-deposition print cartridge controls the finger potential between a printing and a non-printing state. All fingers are reset at once by a common power source, to which each is connected by a diode. Charge storage provided in each finger electrode line keeps the finger at a back-biased potential without deterioration by crosstalk until it is next positively driven to a printing state. Binary-coded drive data is checked for errors at the input, and the charge delivered to each finger is monitored at the output to identify data transmission or cartridge electrode faults.

REFERENCES:
patent: 4160257 (1979-07-01), Carrish
patent: 4365549 (1982-12-01), Fotland et al.
patent: 4841313 (1989-06-01), Weiner
patent: 4990942 (1991-02-01), Therrien et al.
patent: 4992807 (1991-02-01), Thomson

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